一种间断肋式筏架的动力特性及隔振性能分析  

Dynamic Characteristics and Vibration Isolation Performance of Discontinuous Ribbed Raft Frames

作　　者：司贵海 高芳清[1] 陈彦北[2] 张明禄[1] 郭强[2] SI Gui-hai;GAO Fang-qing;CHEN Yan-bei;ZHANG Ming-lu;GUO Qiang(School of Mechanics and Engineering, Southwest Jiaotong University, Chengdu 610031, China;Zhuzhou Times New Material Technology Co. Ltd., Zhuzhou 412000, Hunan China)

机构地区：[1]西南交通大学力学与工程学院,成都610031 [2]株洲时代新材料科技股份有限公司,湖南株洲412000

出　　处：《噪声与振动控制》2017年第5期46-49,共4页Noise and Vibration Control

摘　　要：筏架的动力特性是影响浮筏系统隔振效果的一个重要因素。改变筏架肋板结构,提出一种新型的间断肋式筏架结构。基于Ansys有限元程序建立系统完整的三维模型,对其动力特性进行分析研究;采用功率流评估方法对间断肋式筏架的隔振性能进行了分析,并与传统式浮筏进行比较。研究表明间断肋式筏架系统隔振性能更优越,特别是在中高频段具有突出效果。The dynamic characteristic of the raft frame is an important factor affecting the vibration isolation performance of the floating raft system.In this paper,a new type of discontinuous ribbed raft frame structure is put forward.A complete three-dimensional model of the raft system is established based on the finite element analysis code Ansys to analyze its dynamic characteristics.The vibration isolation performance of the discontinuous ribbed raft frame is analyzed using the power flow evaluation method and compared with that of the traditional floating raft.The research shows that the vibration isolation performance of the discontinuous ribbed raft frame system is superior especially in the middle and high frequency ranges.

关 键 词：振动与波 振动控制 间断肋式筏架 浮筏系统 功率流 有限元分析 

分 类 号：O328[理学—一般力学与力学基础]